Kidde | | Smart Carbon Monoxide Detector, Plug-In with AA Battery Backup, Real-Time Notifications, 2.4 GHz Wi-Fi Enabled | White | Best Buy

$56.99

Kidde | | Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug-In w/ AA Battery, 2.4 GHz Wi-Fi Enabled | White | Best Buy

$79.99